您要查找的是不是:
- Western paper birch Betula papyrifera 西方纸桦
- Betula papyrifera 北美白桦
- Bronssonetia papyrifera( L. ) Vent. 光叶楮
- Broussonetia papyrifera ( L. ) Vent. 光叶楮
- Broussonetia papyrifera (L.) Vent. 楮树
- Broussonetia papyrifera( L. )Vent. 构树
- Betula pendula × B. pendula var. cardica Sok. 欧洲白桦
- Studies on the Chemical Constituents of the Leaves of Betula platyphylla Suk. 白桦叶化学成分的研究
- The microwave-assisted extraction(MAE) of betulin from Betula platyphylla Suk. 利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺。
- Diffuseporous wood is seen for example in yellow birch (Betula lutea). 加拿大桦(黄桦)的木材即为散孔材。
- Carbon storage of and Betula albo-sinensis were higher than other three types. 锐齿栎、油松主要分布于中低海拔地带;
- Toadstools were collected from a range of pure stands of Betula and Pinus both in Britain and the U.S.A. 从英国和美国一系列桦木和松树纯林中收集蕈体。
- Definition: Papermulberry Fruit is the dried ripe fruit of Broussonetia papyrifera (L.) Vent. (Fam.Moraceae). 本品为桑科植物构树 Broussonetia papyrifera (L.;) Vent
- A pair of primers was designed based on the analysis of MADS3 from Betula petulla and AP1 from Arabidopsis thaliana. 在分析了欧洲白桦MADS3与拟南芥AP1中的保守性后,设计了一对引物。
- Mainly by anaerobic bacilli,the Broussonetia Papyrifera white bark is used for biological pulping,,then pulp is chemically bleached. 采用厌氧芽孢杆菌为主的微生物对光叶楮白皮进行了生物法制浆,然后进行补充化学漂白。
- The fluctuant and conventional drying technologies for22 mm-thick Birch( Betula platyphylla) were tested and compared. 进行了桦木波动干燥工艺和常规干燥工艺的对比试验。
- We still skim the backwaters of ponds and streams for the seed of Betula, Acer Salix and Populus species. 我们仍然要在池塘的静水上和溪流中捞取桦木,槭树、杨、柳等树的种子。
- The genetic variations of seedling traits among open-pollinated families of plus trees of Betula luminfera H. Winkl. 光皮桦优良单株自由授粉子代苗期性状的遗传变异。
- Xinjiang sand Edgeworthia papyrifera Parker Trade Co., Ltd. is the five Central Asian countries import and export business-oriented foreign trade companies. 新疆沙桠柏贸易有限公司是以中亚五国进出口业务为主的外贸型公司。
- Betula ermanii and Alnus mandshurica predominated in the colonizing woody species on forest boundaries. 林缘入侵物种主要由岳桦和东北赤杨组成。